all the canopy's from china area are brittle and impossible to find replacements. what I have done is used this stuff:
http://www3.towerhobbies.com/cgi-bin...&I=LXCX70&P=ML
between the cracks. or glue a peace of clear plastic (mylar) to the inside of the canopy so it fits between the canopy framing and use a clamp to hold things together till its dry. that method sometimes yields and opaque glass part of the canopy that looks pretty good.
looks pretty good
Joe